Plumb bob



1,616,234 1927' L. J. F. ROONEY PLUMB BOB Filed June 9. 1925 gag/2&2

Patented Feb. 1, 1927.

LEO J. F. RODNEY, TULSA, OKLAHOILWIA.

PLUIVIB BOB.

Application filed June 9, 1925. Serial No. 35,916.

My invention relates to plumb-bobs and refers particularly to plumb-bobs having elements incorporated therein which will prevent the snarling of the bob-string when the device is not in use.

Plumb-bobs consisting of a weighted body carried by a string are of general use.

As plumb-bobs are employed only intermittently, difficulty has been experienced in maintaining the string from a snarled or tangled condition when the device is not in use, thus causing considerable trouble and lossof time.

The device of my invention overcomes these and other objectionable features, as will be evident upon a consideration of my drawings and specification; and presents a plumb-bob capable of accurate 1')erpendicu lar suspension and with carried means whereby the string will be prevented from assuming a tangled condition.

My device is of such construction that when not in use, the string may be wound around it and maintained in this position, thus overcoming the difficulties incident to a tangled bob-string.

My device also contains means by which the string may be placed in accurate vertical alignment with the device, thus insuring positiveness and eifectiveness of operation.

In the accompanying drawings illustrating one form of the device of my invention similar parts are designated by similar numerals.

Figure 1 is a side view of one form of my device without the string.

Figure 2 is a top view of Figure 1.

Figure 3 is a bottom view of Figure 1.

Figure 4 is the device of Figure 1 in partial vertical section, the device being maintained pendant from the string.

Figure 5 is a view of the device of Figure 1, with the string wound around it and maintained in position by passage through the passageway within the device.

The particular form of the device of my invention shown in the accompanying drawings comprises an octagonal body 10, having the neck 11, the head 12 and the conicalshape'd lower member 13.

An upwardly inclined conduit 14 in the head 12 connects with the vertical conduit 15 of said head, the conduit 14 being of larger diameter than the conduit for purposes described later.

The lower portion of the body has the transverse passage 16 extending there through and preferably having flared end openings as shown.

The device carries a string 17 which is passed through the conduit and has a knot 18, in order to maintain the string 17 in position.

By having the conduit 14 larger than the conduit 15, the knot 19 will pass through the conduit 14 and be positioned at the lower end of the conduit 15, thus allowing the bob to hang exactly perpendicular.

Figure 1 illustrates the device. of my invention in se.v that is in a pendant perpendicular position.

When the device is not in use, the string 17 is wound around the body 10 as shown in Figure 5 and the end of the string passed through the passageway 16, thus maintaining the string in wound position.

I prefer to havethe body 10 of fiat face construction as the faces increase accurate observation.

From the above, it will be seen that my device is of small and convenient dimensions, and hence, can be readily carried in the pocket or hand, especially if the lower extremity is somewhat rounded in form; that it allows of absolute perpendicular position in use and prevents the snarling of the string when not in use, and that it is easily and cheaply produced.

I do not limit myself to the particular size, shape, number, arrangement or material of parts as shown and described, as these are given simply as a means for clearly describing the device of my invention.

What 1 claim is 1. A plumb-bob consisting of a one-piece cylindrical-shaped member having a lower point-ed end portion, an upper neck portion and a head carried by the neck portion, means for maintaining a suspending cord to the head, and a conduit through the pointed end port-ion through which the cord may be threaded and retain-ed when wrapped around the lower end portion of the device when it is not suspended.

2. A plumb-bob consisting of a one-piece cylindrical-shaped member having a lower pointed end portion, an upper neck portion and a head carried by the neck portion, a vertical cord conduit extending upwardly from the upper neck portion, a cord conduit extending angularly downwardly from the vertical conduit to allow the introduction of a suspending cord, a suspending cord extending through the conduits and 5 being fixed therein and a conduit through the lower portion through which the free end of the cord may be passed and retained when it is wrapped around the lower portion above the conduit.

Signed at Tulsa, in the county of Tulsa 10 and State of Oklahoma, this 26th day of May, 1925.

LEO J. F. ROONEY. 

